Bench-vise.



G. PEKAT.

BENCH VIBE.

APPLICATION IILBI) JUNE 3, 1913.

1,106,056. Pat n ed m4, 1m

w w Q Zhwentor Cfiorus 6770 witnesses 8g f W attorneys UNITED 1 STATES1PATENT OFFIGE.

CHARLES PEKAT, OF EAST GARY, INDIANA, ASSIGNOR TOOON'IINENTAL FOUNDRY AND MACHINE COMPANYLOF EAST GARY, INDIANA,:.A CORPORATION OF INDIANA.

BENGH-VISE.

To all whom it may concern: Be it known that I, Crmnnns Pmm'r, c1t1- zen of the United States, residing at East Gary, in the county of Lake and State of Indiana, have invented certain new and useful Improvements in Bench-Vises; and I do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same. I a

. This invention relates to vises, partlcularlybenchvises, and an object of the invention is to provide an improved vise of this type which may be set rigidly with minimum loss of time.

A further object of the invention is to provide avise wherein the movable jaw may a be slid to any desired position within the limits of the vise and then looked positively by a very slight turn of the handle, means being provided for preventing the movable jaw from slipping when once set.

A further object of the invention is to provide a quick setting vise with the locking mechanism of such character that the vise may be released quickly, this result being obtained by preventing one part of the unlocking part of the mechanism from following the other when it is desired to separate the jaws of the device.

With these and other objects in view the invention comprises certain novel construcs tions, combinations, and arrangements of parts as will be hereinafter more fully described and claimed.

Generally, this invention aims to provide a quick setting vise wherein the movable jaw is associated with a roughened bolt around which fits a clamp, the motion of which in i one direction is limited, this clamp being I provided with a beveled surface which oo- Specification of Letters Patent.

Application filed June 3, 1913.

Patented Au. 4, 1914.

Serial No. 771,566.

vided with the usual movable jaw 1, and the;

fixed jaw 2, said jaw 2 being secured to a bench or other suitable structure in any approved manner. The movable jaw 1 has passing through the forward end thereof a clamping bolt 3 which has the forward end.

thereof provided with a shoulders adapted to engage the outer surface of the body 5 of jaw 1, while there is secured to the clamping bolt in any approved manner a collar 6 adapted to engage the opposite side of the body 5 sothat the jaw 1 necessarily moves with thebolt. The usual slidehandle 7 in common use in vise construction may also be provided for the purpose of turningthe clamping bolt 3. There are in the clampmg bolt key-ways 8 which start from points removed somewhat from the handle end and extend to the opposite end, there being shown in the drawing two of these key-w ays.

Extending upwardly from the lower portion of the stationary jaw member 2 is a screw 9 which extends into a recess 10 formed in the bottom stationary jaw member 2 and is adapted to engage a strain block 11. This strain block 11 is notched out as at 12 and is provided with an extension between said notches which fits tightly within the recess 10 so that when the screw 9 which enters a suitable threaded screw hole in the bottom of the straining clamp 11, the block will be held rigidly with respect to the stationary jaw 2.. Extendingfrom each end of the block 11 are supports 13 and 14 respectively, the support 13 being provided with a bore 15 somewhat larger than the clamping bolt 3, the purpose of which will be de scribed hereinafter,while the support 14 has a bore 16 internally threaded for the purpose of receiving the threads formed upon a clamping screw 17. The clamping screw 17 and the corresponding threads in the support 14 may be made of any design, but they are shown here preferably as being square threads. The clamping screw 17 has extending therethrough a bore of sufficient size to receive the clamping bolt 3, this bore being provided with feathers or keys 18 which are secured thereto by means of screws 19 passing through the extending ends of the feathers or keys into the face of the clamping screw 17. These feathers or keys 18 are designed to fit in the key-ways 8 so that the clamping screw 17 may move longitudinally with respect to the clamping bolt 3 but still be required to turn with said clamping bolt 3.

Surrounding the bolt 3 is a clamping mem ber 20, one end of which is provided with a beveled surface 21 adapted to engage a bevel 22 formed on the clamping screw 17 this bevel 21. terminating in a cylindrical end 23 which moves within the enlarged portion 24 of the bore passing through the clamping screws 17 for reception of the clamping bolt. This end of the clamping member 20 is made collapsible by means of slots 25, four of these slots being shown in the drawing sothat when pressure is brought to bear upon the beveled portion 21, thediameter of the cylindrical portion 23 will be reduced somewhat and the inner surface of the clamping member 20 be forced against the clamping bolt 3,

In order that the section of the clamping member 20 may effectively grip the clamping bolt 3, the latter is provided vwith fine threads, while the clamping screw may also be provided with corresponding threads, although other means may be used for making the clamping surfaces sufficiently rough to prevent their slipping. The shank of the clamping member 20 is reduced to form a shoulder 26 with the beveled portion 21, and there is interposed between this shoulder 26 and the support 13 a helical spring 27 which is of sufficient strength to prevent the beveled end of the clamp from sliding backwardly when the clamping screw 17 is forced thereon. The slots 25 do not extend the full length of the clamping member 20 but are stopped at some distance from the end 28 of the clamp so as to provide a continuous cylindrical surface which may be threaded to receive a lock nut 29 which lies fiat against the support 13 and serves to afford means for controlling the spring 27.

In describin the operation of this vise, it is to be remem ered that-the strain block 11 is stationary and that except for the resilience of the spring 27, the clamping member 20 is also practically stationary while the clamping screw 17 is feathered to the bolt 3 and turns therewith when the handle 7 is moved. Supposing that the vise is in the position shown in the drawing, and that it is desirable to insert a piece of work between the jaws, it will be necessary merely to give the handle 7 a slight left hand movement, assuming that the threads on the clamping screw 17 are right-handed. This lefthanded movement of the clamping bolt 3 will carry with it the clamping screw 17 by reason of the feathers or keys 18, so that the clamping screw 17 will be moved from the clamping member 20 and the beveled surface 22 drawn from the beveled surface 21. By reason of the lock nut 29, it is impossible for the clamp to follow the clamping screw. As soon as the clamping screw is removed, the several portions of the clamp will spring back to their normal position due to the natural resilience of the material from which the clamping member 20 is made, which will result in the unlocking of the clamping member 20 from the clamping bolt 3. It will then be possible to slide the clamping bolt 3 out as far as desired and insert the work between the jaws, provided of course that the bolt 23 is made long enough. By reason of the keys 18, the clamping bolt 3 may be moved with respect to the clamping screw 17, which latter will remain practically in the same position it was in when the clamping member 20 was unlocked from the clamping bolt 3. The jaw 1 will then be brought so as to lock the working vise as tightly against the work as possible after which the handle 7 is given a right-hand movement which will force the clamping screw 17 and the beveled surface 22 against the clamping member 20 and beveled surface 21. The clamping member 20 will then be relocked in its new position against the clamping bolt 3 and inasmuch as the locking surfaces are roughened slipping is precluded. If the handle 7 should be turned farther than is. necessary so that the clamping screw 17 is moved too far to the right as shown in the drawing, no harm will be done inasmuch as the spring 27 will give, but it will be noted that when the vise is again loosened, the spring 27 will serve to compel the clamping member 20 to follow the clamping screw 17 until the lock nut 29 engages the support 13.-

- What I claim is:

1. A vise comprising a stationary jaw, a movable jaw, a clamping bolt moving with said movable 'aw, a clamping screw rotating with said olt but movable thereon and provided with a bevel, a clamping member surrounding said bolt and provided with a bevel adapted to engage said bevel of the clamping screw, and means engaging the clamping member and strain-block adapted to force the clamping member against the clamping screw as the latter rotates in a predetermined direction.

2. A vise, comprising a stationary jaw, a movable jaw, a clamping bolt moving with said movable jaw, a clamping screw rotating with said bolt, but movable thereon and rovided with a bevel, a split clamping mem er having a beveled surface adapted to engage a beveled clamping screw, said clamping member surrounding the bolt and adapted to grip the same when thebeveled surfaces are in contact, means rigid with the immovable jawguiding the clamping member, and resilient means interposed between said last mentioned means and the split clamping member adapted to hold the beveled surfaces of the clamping member adjacent to the beveled surface of the clamp ing screw.

3. A vise, comprising a stationary jaw, a movable jaw, a clamping bolt rotatively mounted in and held against axial movement with respect to the movable member, an orificed member rigid with respect to the sta tionaryj aw, a split clampingmemberextending through the orifice of the fixed member and surrounding the clamping screw, resilient means interposed between the rigid member and the split end of the clamping member,

a clamping screw rotatable with the clamping member and movable axially with respect thereto, the end of the clamping screw adjacent to the split end of the clamping CHARLES PEKAT.

WVitnesses WVILLIAM EARLE, O. W. LANGE.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. G. 

